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Running 18lbs on stock map sensor

Old 03-30-2004, 12:19 AM
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Default Running 18lbs on stock map sensor

It's wierd, I can run 18lbs of boost without any problems on my stock Honda map sensor. I heard after 11lbs it does something??
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Old 03-30-2004, 12:25 AM
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Default Re:Running 18lbs on stock map sensor

what management do you have?
are you running check valves or a missing link?
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Old 03-30-2004, 12:57 AM
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Default Re:Running 18lbs on stock map sensor

No check valves or anything, running the ZDYNE GOLD SECU w/ the B16FI program
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Old 03-30-2004, 01:04 AM
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Default Re:Running 18lbs on stock map sensor

After 11psi, it's not increasing voltage. Which means your ECU doesn't know you're higher than ~10psi.

I don't know the physical limit of the stock MAP sensor before the diaphram rips.
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Old 03-30-2004, 01:13 AM
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Default Re:Running 18lbs on stock map sensor

So you mean if I boost past 10lbs on the stock map my Ecu will only provide enough fuel for 10lbs worth of boost even though I am at 18?
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Old 03-30-2004, 01:21 AM
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Default Re:Running 18lbs on stock map sensor

No... I mean that the ECU will not know you're running more than 10psi.

Basically, it will use the last pressure column as a "catch all". Whatever fuel and ignition values you have in the last column are the same values that will be used for anything over ~10psi.

Same goes with RPMs.. any values you have in 7400rpms are the same values that will be used when you rev PASSED 7400rpms.
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Old 03-30-2004, 03:56 PM
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Default Re:Running 18lbs on stock map sensor

The actual sensor itself can suffer damage when you're running around 13 psi repeatedly. You need to hit it with a check valve.

Also, just curious, what size fuel injectors are you running?
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Old 03-30-2004, 03:57 PM
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Default Re:Running 18lbs on stock map sensor

I was able to run about 22 psi (on accident when I ------- forgot to reattach the wastegate actuator vacuum) with the AFC hack, and although I got a little bit of detonation the enigne took it. The detonation only occured when the boost first hit then I think the water injection shut it up. So its pretty risky *** ----

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Old 03-30-2004, 05:13 PM
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Default Re:Running 18lbs on stock map sensor

watching my voltage of the map sensor @ around 10.something psi the voltage will peak but my boost will go up 2-3 more psi. I run the turboedit rom in my pm6 and i guess it doesn't have the MAP sensor CEL code in there anymore. or it has been modified to not be totally ------- retarded like the stock honda map CEL's
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Old 03-30-2004, 05:31 PM
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Default Re:Running 18lbs on stock map sensor

heh.. Dave Blundell wrote a very nice boost routine so that the ROM used with TurboEDIT will not "Freak out" when it see positive manifold pressure.
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